In object-oriented programming, a attribute of a category ensures that just one occasion of that class can exist inside a given context. This occasion is usually accessed by means of a static methodology or a chosen international variable. For instance, a database connection in an utility could be managed by a category designed to make sure that just one connection is established, stopping useful resource conflicts and simplifying administration.
This design sample promotes effectivity by avoiding redundant object creation and facilitates centralized management. It is particularly helpful for managing shared sources, international configurations, and different components that should stay singular. Traditionally, this strategy has been employed in situations requiring stringent management over object lifecycles and state, predating many fashionable dependency injection frameworks. It may simplify utility logic and enhance predictability, significantly in advanced techniques.
